Machine for making pyjama frogs



16 1927; 1,639,093 Aug L. H. MORIN MACHINE FOR MAKING PYJAMA FROGS Filed Aug. 13, 926 4 Sheets-Sheet 1 A; ATTORN EYS Aug. 16, 1927. 1,639,098

L. H. MORIN MACHINE FOR MAKING PYJAMA FROGS Filed Aug. l3, 1926 4 Sheets-Sheet 2 QR @Waq 1 ATTORNEYS Aug. 16, 1927.

L. H. MORIN MACHINE FOR MAKING PYJAMA FROGS Filed Aug. 15, 1926 4 Sheets-Sheet 3 MM M M ATTORNEYS 16 1927. A L. H..VMOR'IN MACHINE FOR MAKING PYJAMA FROGS Filed Aug, 13, 1926 4 Sheets-Sheet 4 i-ATTORNEYS Patented Aug. 1 6, 1927.

, nuirsn STATES LOUIS I-I. MORIN, or ivEw YORK, v1v. Y.,

Assrenon To A. s.. PHILLIPS, or NEW YORK, N. Y,

MACHINE ron MAKING IYJAMA FBOGS.

Y Application filed August 13, 1926. Seria1 I I o.' 1 29,( J75 r, cially woven tape or braid provided'along its edges with v cords shdable Within the,

woven fabric of the tape. The tape is curved fiatwise to form the characteristic loops by pulling one of these cords while holding the other fiXed'relative to the tape, the c'ontour and po'sitionofeaoh loop being determined by the length of cord pulled and the place at which the fixed cord'isheld. So farlas I am aware all pyjama frogs today are air made by hand and] although the operators acquire a high degree of skill it is difiicult to reproduce hundreds ofthese frogs of eX- actly the same pattern, and besides, as is usually the case with'hand labor, the output is relatively small. It is the object of the present invention to provide a machine for making these frogs. p v

In the -machine which I have designed a unit length of tape is held in' position by a movable gripper which bears against one of the cords only, and a movablepul'lingmember which. pulls the other cord. As the movement of the pulling member curves the tape the gripper is moved forward step by step by means synchronized with the pulling member, thus changing the effective point at which the fixed cord 'is held, and hence determining the curvature and position of the loops. As the movements of the gripping and pulling members are synchronized in accordance with a definite predetermined plan, it is possible to produce frogs of anyv desired pattern, all exactly alike." In order tomak-e the machine automatic and continuous in its operation I utilize the moving member which pulls the cord during the looping operation, to unwind a unit length of tape from a supply spool and draw it under the gripper, and, in view of the fact-that during the looping operation the pulling member must pull on one of the cords "only, I cause it to draw the tape into position'under the gripper through 'a' pull e'X-erted'on this same cord. The machine is'thus all set for-the looping operation assoon asthe gripper engages the tape-which it does at the proper time. I also employ meansfor automatically cutting off each unit length of tape just be fore the looping operation, and means for severing the extending cord froin-the-ompleted frog 2 And in order to insure that the pulling member seize its proper cord only and not the fabric of the tape, I have provided a finger'which strips the fabric from the forward end of the remaining tape after each cutting thus leaving the cord exposed andi'n readiness to be seized.

co-pending ap li'cation Serial; No. 129,076 filed concurrent y herewith I have illustrated and describeda machine in which a plurality of separate grippers are employed and released in timed sequence as the other cord is'pulled. Except for this and the diiference'in the mechanisms for operating these two types of grippers ,"the two ma chines are identical. I r

In the accompanying drawings I have illustrated a machine embodying the'principles of my invention. It is to be understood, of course, that this machinernight be modified in many respects and still em;

body the invention, this being particularly true of the operating mechanism illustrated. In these drawings, Figure 1 is a plan view of the machine; Figure 2 is a transverse vertical sectionon an enlarged scale taken along line 22 of'Figure 1; Figure 3 front elevation of themachine; Figure is a section taken along line 44 of Figure 3;

Figure 5 is an enlarged detailed section taken along line 55 of Figure 1; Figure'6 is a detailed section taken along line 66 of Figure-5; Figure 7 is a horizontal section taken along line 7.7 of Figure 2 and Figures 8, 9, 10,11,12, 13 and 14 are'views of the frog in various stages of manufacture,

Figure 14 being a view of the completed frog.

' he machine illustrated in these drawings comprises a base 61 on which aremounteda plurality of standardsQ which s'up'portthe various operating elements of the "machine. A bracket 3 is secured to "the left-hand' standard and carries a spool {L which 'sup plies the tape "5 from which the frogs are made) The tape from this spool is unwound,

cut oflt' in unit lengths, and formed into loops of the desired curvature and position to form the completed frog.- Power is supplied to the machine through a pulley 6 to which the main shaft 7 of the machine" is connected and'disoonnected bymeans of a clutch 8 controlled by a clutch arm 9. I

the shears through links 36. designed that when the carriage has un- Extending across the front of the machine is a horizontal track or guide-way 10, T-shaped in cross section, upon which is mounted-a' c'arriage 11 which is movedba-ck and forth along this guide-way by means of a link-work consisting of five inter-connected links 12, 13, 14, 15 and 16. the links 14 and 16 being pivotally mounted upon the fixed bosses 17 and 18. Fixed upon the shaft 7 is a cylindrical cam drum. 2O provided with a peripheral cam groove 21. The link 16 is, provided with a cam follower 22 extending within the cam groove 21, and the reciprocation of the carriagell is thus controlled by the cam drum 20. The link 12 which is pivotally connected with the carriage 11 terminates in a dog 24 fixed relative to the link 12 so that when the carriage is moving toward the right, Figure 1, the dog 24 is swung clockwise and into contact with a plate 25 forming a part of the carriage. When the carriage 11 is moved toward the.left,the dog 24 is swung counter-clockwise out of contact with the plate 25, but limited in its counter-clockwise swinging by means of a suitable stop 26 on the carriage which engages the link 12.

The tape 5 as it leaves the spool extends through a guide-slot 27 in. the bracket 3 and into the space between the dog 24. andthe plate 25 when the carriage is in its extreme left-handpositioinas shown in Fig ure 1. The cam drum 20 then moves the carriage to the right, acting through the various connecting links described above,

and swings the dog 24 inward to seize the lower of the two edge cords of the projecting tape, as shown most clearly in Figure 2. Continued movement of the carriage toward the right draws a unit length of tape across the machine and after this unit length has been severed from the tape on the spool, the machine is in readiness for the looping operation. I shall now describe the means for cutting off this unit length of tape which has been drawn into looping po sition. I

'Pivot'ally. mounted at 28 upon the lefthand standard 2 of the machine is a pair of shears 29, the cutting plane of which is just within the extreme left-hand position of the dog 24. These shears are operated by means of a cam disk 30 fixed upon the shaft 7 and provided with a facial cam groove 31 in which is positioned a cam follower 32 mounted upon the ends of a bell-crank lever pivotally mounted upon the standard 2 at 34, the-other arm of which is connected to Cam 30 is so wound a predetermined unit length of tape, the shears 29 operate to sever this unit length from the tape on the spool but leave the forward end of the new tape in position to be gripped by the carriage on its return movement. The shearing action just described does not'take place, however, until the'unit length of tape has been securely gripped in position for looping, and: I shall now describe this gripping means.

Extending across the front of the machine, just above the guide-way 10 is a plate 38 pivoted along its upper edge at 39. This plate is swung about the axis 39 through a. small arc, and for a purpose to be described later, by means of an arm 40 carrying at its inner end a cam follower 41 controlled by the peripheral cam face of the cam 30. Also extending across the front of the machine beyond the plate 38 and above and beyond the guide-way 101 is a second track or guide-way42 upon which a carriage 43 is mounted for reciprocation. This carriage 43 carries a horiz ontally disposed roller 44,

positioned just opposite the lowerrinner face of the plate .38, and mounted upon a shaft 45 journalled within the carriage 43 the shaft 45 carrying at its upper end a pinion 46 which meshes with a. fixed rack 47 extending along the front of the machine. 1

When the carriage 11 is drawing the unit length of tape across the machine, the pull, as explained above, is exerted through the lower edge cord. During this movement the plate 38 is swung into itsouter position, as illustrated in Figure 4, and the upper edge cord is passed between the roller 44 and the plate 38, the carriage 43 at this time being situated near the left-hand side of the ma chine. tape has been unwound, the cam 30, acting through the arm 40, swings the plate '38 downward, securelygripping the upper edge cord of the tape between the lower inner face of the plate and the roller 44. This much having been accomplished, the tape is securely held and the shearing action immediately-follows. he tape is then in position for the looping operation which I shall now describe.

The roller 44 and theplate 38 having gripped the upper edge cord of the tape, somewhere intermediate its ends, but close to the left-hand end, further movement of the carriage 11 to the right pulls the lower edge cord and curves the left-hand end "of the tape as illustrated in Figure 8. To form a single loop of the desired curvature and to form a pluralityof such loops in proper spaced relation, it is necessary to move forward the effective point at which the tape is gripped. I do, this by moving the roller 44 forward along the plate 38. This movement is effected by. link-work similar to 7 that which controls the movement of the carriage 11, and consisting of links 48, 49,50, 51 and 52. Link 52 is pivoted upon lug 53 extending rearwardly from the guide-way 10, and the links 49 and are pivoted upon the fixed upright 54, these latter two links As soon as the desired length of being each fixed to a pivotpin 5 and moving in unison. The link is provided with a cam follower '57 which;enterrdsfupward' within the peripheral cam groove 58"of a cam drum 59' fixed upon the shaft 7 and de-,

signed'to effect reciprocation of the car'- s 3 I The operation of the machine during the looping operation is as follows: The ear riage ll'moves to the right, while the car riage 43' follows step by step. The first curve, as illustrated in Figure 8; is madebefore the carriage 43 and grippingroller 44 have moved. Thereup'on the cam drum 59 movesthe 'i'o'ller44 forward a 'stepan'd holds it stationary 'until the-"seini jcircu'lar curve of Figure 9 is made. The roller then moves forward another step-and the com plete loop of Figure 10 results. The next step issomewhat longer'to allow for the straight length of tape between-the first loop and the next one to be formed as illustrated in Figure 11. And soon untilthe completed frog is made. In order to insure rotation of the roller 44 andto guardfagainst ashaing movement which would tend to move the tape forward bodily and interfere' witl'i the proper spacing of the loops, the rack and pinion 46 and 47 have been provided.

At the .conclusion of the looping operation the lower edge cord extends beyond the end of the tape and should be cut oil. This is accomplished by means of a knife pivoted at 61 on the right-hand standard 2cooperating with a shear blade 62, and operated by means of an arm'63 carrying a cam roller 64 which is controlled by a-cam 65 on the peripheral face of the cam drum 20. This cam is so timed that when the frog I has been completed, the -extending. cord is severed and the completed frog deposited upon an ofi-bearing belt 66, oper'atedby means ofa chain and sprocket connection 67 from the shaft 7. Thefrogs thus looped a are complete exceptfor a light stitching designed to keep them'in proper shape during packing and'shipping. I I

Thecycle just described isnow repeated, the carriages 11 and 43 being moved to the left, the carriage 11 in position to" seize and unwind a new unit length of tape, and the carriage 48 in readiness to grip theQnew unit length atthe beginning of the looping operation. It is necessary, however, that the dog 24 should seize only the lower edge cord of the new tape, as otherwise when'the looping operation begins and thetape itself is held stationary, thefabricwoul'd be torn. I shall now de's'cribe't-h'e mechanism for preparing the forward end of the new tape for seizure by the dog 24. a r,

Pivoted on the bracket 3 ,and beyond the shears29 is an arm 6'8;provided1atits inner d w h a fing r 6 1de sa fltbbesituns against the fabricof the'forwa'rd end ofthe tape between the two edge cords, but normallyheld out of contact with the tape by means are spring connecting the outer end of the arm 68 with an'extension on the bracket'iif The inward swinging movement of the finger 69 is effected as follows: 7 The arm 68 providedintermediate its ends with-'a'n extension 71 which is engaged by a set-screw 72 mounted upon the outer blade.

of the shears "29 when the shears are swung into wideopen position to swing the finger 6 9' inward against the forward end of the tape, this movementstripping the edge cords and leaving them b'are'for-a sufficient distame-to permit the do '24 to get a clean grip" upon the lower cor?! NVhen the shears 29 are operated to out the tape the spring 70 swings thefinger 69 out of the'way. T he cam groove 31 is'so designed that after the cutting operation the shears are opened only enough to free them from the tape and swing them out of the path of the dog 24, but not enough to cause contact between set screw 7 2 and extension 71. Thus the spring 70 holds the finger 69I"out-'of contact with the't'ape and permits the dog 24 freely to grip and draw the tape.

The relative movement of the two carriages 11 and 43 determines the pattern to which frogs are made, and this pattern can be varied by varying this relative movement. a

prising the combination of means for grip-Q ping the t apeat one edge, means for'pulling the cord in the other edge to form a curve in the tape. and means synchronized with the pulling means for releasing the tape from the gripping means when the curve has been made. 7 V l '2. A machine for makin pyjama frogs fromtfap'eha'ving slidab'le edge cords'comprising the combination of means for grip plng the tape at one edge, means for pulling theco rd in the ether edge to form a loop 1n the-jtap'e, means synchronized with the pulling means for changing the effective point at whichthe tape gripped, thus deterinini'ngthecnr'vature of the loop.

A machine for making pyjama frogs from tapeghaying 'slidable edge cords comprising combination of means for gripping the tape fit ens-edge, mean's for pulling the cord in the other edge to form loops in the tape, and means synchronized with the pulling means for changing .the effective point atwhich the tape is gripped, thus determining the curvature and position of the loops. 7

f. A machine for making pyjama frogs from tape having slidable edge cords comprising the combination .of means for gripping the tape at one edge, means for pulling the cord in the other edge to form loops in "he ta )e', and means synchronized with the pulling means formoving the gripping means forward in the direction of movement of the pulling means, thusadvancing the effective point at which the tape is gripped and determiningthe curvature and position of the loops. v I

5. A machine for making pyjama frogs from tape having slidable edge cords comprising the combination of a carriage, means on the carriage for seizing one of the edge cords, means for moving the carriage across the machine to draw out a unit length of tape, means for gripping the tape at the other edge to prevent further bodily movement thereof and means synchronized with the carriage for changing the effective point at which the tape is gripped as further movement of the carriage pulls the seized cord, thus forming in the tape loops of predetermined curvature and position.

6. A machine for making pyjama frogs from tape having slidable edge cords comprising the combination of a longitudinal plate, a roller adjacent the plate, a carriage,

means 011 the carriage for seizing one of the edge cords, means for moving the carriage across the machine to draw out a unit length of tape between the plate and the roller, means for causing the roller and plate to grip the other edge of the tape to prevent further bodily movement thereof and means synchronized with the carriage for advancing the roller along the plate as further movement of the carriage pulls the freecord, thus forming in the tape loops of predetermined curvature and position.

7. A machine for making pyjama frogs from tape havingslidable edge cords comprising the combination of a movable carriage, means on the carriage for seizing one ofthe edge cords, means for moving the carriage across the machine to draw out a unit length of tape from a spool, means for gripping the tape at the other edge when the unit length has been drawn out, to prevent furth r bodily movement thereof, means for cutting the unit length from the spool, and means for changing the effective point at which the tape is gripped as further movement of the carriage pulls the seized cord, thus forming in the tape loops of predetermined curvature and position.

8. A machine for making py ama frogs from tape having slidable edge cords comprising the combination of a movable carriage, means on the carriage for seizing one of the edge cords, means for' moving the carriage across the machinefto draw out a unit length of tape from a spool, means for gripping the tape at the other edge/when the unit length has been drawn out, toprevent further bodily movement thereof, means for cutting the unit length from the spool, means for changing theeffective point at which the tape is gripped as further movement of the carriage pulls the seized cord, thus forming in the tape loops of predetermined curvature and position and means for returning the carriage to seize anew piece of tape. r

9. A machine for'- automatically and, continuously making pyjama frogs from tape having slidable edge cords comprising the combination of means for holding a spool of tape, a reciprocable carriage for seizing the tape by one of its edge cords, drawing it across the machine and continuing the pull to loop the tape, reciprocable means'for gripping the unit length of tape unwound by the carriage at its other edge and intermediate its ends and advancing in timed relation with the carriage as the latter pulls the free cord to loop the tape, means for severing the unit length from the spool before the looping action beginsland means for reciprocating the carriage and gripping means across the machine.

10. A machine for making pyjama frogs from tape having slidable edge cords comprising the combination of means for seizing one of the edge cords and drawing a unitlength of tape across the'machine, and

means for gripping the other edge of the tape intermediate its ends to prevent further bodily movement thereof, whereby further movement of the moving means pulls the edge cord and curves the tape.

11. A machine for making pyjama frogs from tape having slidable edge cords comprising the combination of a plate against which the tape lies, a gripping roller for pressing one edge of the tape against the plate to hold the tape against bodily movement, means for pulling the cord in the other edge to form loops in the tape, and means for moving the roller forward in the direction of movement of the pulling means, thus determining the curvature and posi tion of the loops. I

12. A machine for making pyjama frogs from tape having slidable edge cords comprising the combination of aplate against which the tape lies, a gripping roller for pressing one edge of the tape against the plate to hold the tape against bodily movement, means for pulling the cord in the other edge to form loops in the tape, and means for moving the roller forward step-by-jstep' ment, means for pulling the cord infthe other edge to form loops'in-the tape, and means for moving the roller forward in the direction of movement of the pullingmeans, thus det-ermmlng the curvature and position of the loops, a fixed rack, and a pinion coaxial with the roller meshing with the rack for positively rotating the roll-er as it' moves forward.

v 14:. A machine for making pyjama frogs from tape having slidablefedge. cords comprising the combination of a transversely movable plate, a roller' positioned adjacent the plate, a carriage, means on the carriage for seizing the lower edge cords of the tape, means for moving the carriage to draw a unit length of tape between the plate and the roller, means for moving the plate transversely to grip the upper edge of the tape between the plate and the roller and prevent further bodily movement thereof, and means for moving the roller along the plate to advance the effective point at which the tape is gripped as further movement of the carriage pullsthe lower edge cord, thus forming in the tape loops of predetermined curvature and position.

15. A machine for making pyjama frogs from tape having slidable edge cords comprising the combination of means for holding a spool of tape, means for seizing one of the edge cords and drawing a unit length of tape across the machine, means for gripping the other edge of the tape after the unit length has been drawn out to prevent further bodily movement thereof, means for cutting the unit length from the spool, means for continuing the pull on the seized cord to form loops in the tape, means for advancing the effective point at which the tape is gripped as the pulling proceeds, thus deter mining the curvature and, position of the loops, and means for cutting off the outer end of the pulled cord when the frog is complete. 16. A machine for making pyjama frogs from tape having slidable edge cords comprising the combination of means for holding a spool of tape, a carriage for seizing one of the edge cords and drawing a unitlength of tape across the machine, means for gripping the other edge of the tape after the unit length has been drawn out to hold it against further bodily movement, whereby further movement of the carriage will loop the tape, means for cutting the unit lengthfromthespool, means for returning the carriage to *seize anew pieceof tape, and means for strlpping one of the cords at the forward end of the new tape to on able the carriage to seize it.

17. In a machine for making frogs from tape having slidable edge cords by pulling one of the cords while gripping the tape at varying points along the other edge, the combination of means for holding a spool of tape, means for stripping the forward end of one oftlieedge cords, and

means for seizing the stripped-end and unwinding a unit length of tape from the spool. A

18. In a machine for making pyjama frogs from tape 'havingslidable edge cords edge, the combination of means for holding a spool-of tape, a finger pivoted adjacent the forward end of the tape, means for swinging the finger against the end of the tape and between the two cords to push back pyjama by pulling, one of the cords while gripping the tape at varying points along the otherv the intermediate fabric a'nd strip the ends of the cords, and means for seizing one of the stripped cords. Y

19. In a machine for making pyjama frogs from tape having slidable edge cords by pulling one of the cords while gripping the tape at varying points along the other edge, the combination of means for holding a spool of tape, means for unwinding a unit length of tape from the spool, means for cutting off the unit length, and means associated with the cutting means for stripping the forward ends of the cords.

20. A machine for making pyjama frogs from tape having slidable edge cords comprising the combination of means for holding 'a spool of tape, means for stripping the forward ends of the cords, means for seizmg one of the stripped cords and unwinding a unit length of tape from the spool, means for cutting the unit length from the spool,

means for-gripping the unit-length at the other edge and intermediate its ends to pre vent further bodily movement whereby further pull exerted on the free cord will loop the tape and means for advancing the effective point at which the tape is gripped as the free cordis pulled thus determining the curvature andpositions of the'loops.

21. A machine for making pyjama frogs from tape having slidable edge cords comprising the combination of means for holding a spool of tape, means for stripping the forward ends of the cords, means for seizing one of the stripped cords and unwinding a unit length of tape from thespool, means for cutting the unit length from the. spool, means for gripping the unit length at the other edge and intermediate its ends to prevent further bodily movement whereby fur- V ther pull exerted on the free cord will loop the tape, means for advancing the effective point at which the tape is gripped as the free cord is pulled thus determining the curvature and positions of the loops, and means for cutting 01f the extending cord I from the completed frog.

' 22. A machine for making pyjama frogs from tape havingslidable edge cords comprising); the combination of means for holding a spool of tape, a finger pivoted adjacent the forward end of the tape, means for swinging the finger against the fabric of the tape intermediate the cords to strip the latter, a plate, a roller situated adjacent the plate, a carriage, means on the carriage tor seizing one of the stripped cords, means for moving the carriage to draw a unit length of tape from the. spool b-GCWQGZTthG roller and the. plate, means fo r cutting-the "unit length of tape from the spool,; means for moving the plate toward the roller-to grip the other edge of the tape intermediate its ends and prevent further bodily movement thereofivwheieby further pull exerted on the free cord'will loop the tape, means synchronized with the carriage for moving the roller step by step along the plate to advance the effective point at which the tape is gripped, thus determining thecui'vature and position of the loops, and means for cuttinpgofi the extending cord from the completed frog; I

In testimony whereof I flfllX my signature.

LoUIs H. MoRiN;

CERTIFICATE OF CQRRECTION.

Patent No. 1,639,098. Granted August 16, 1927, to

LOUIS H. MORIN.

It is hereby certified that error appears in the above numbered patent requiring correction as follows: In the grant, heading to the drawings, and throughout the specification, for the word "pyjama" read "pajama"; and that the said Letters Patent should be read with this correction therein that the same may conform to the record of the case in the Patent Office.

Signed and sealed this 20th day of December, A. D. 1927.

M. J Moore,

Seal. Acting Commissioner of Patents. 

